Sterilizing apparatus.



v#mL-H2448. Patented Dec. 3o, |902.

. R. n. PEASE & P. J. TUCKER.

STERILL'ZING APPARATUS.

(Application filed Aug. 26, 1902.) (N o M o de l'.)

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' and other articles may be sterilized and any llNiTen STATES PATENT Tries..

ROBERT R. PEASE AND PHILIP J. TUCKER, OF HARTFORD, CONNECTICUT.

STERILIZING APPARATUS.

SPECIFICATION forming part of Letters Pate11t-No. 717,448, dated December 30, 1902.

` Application tied August 26,1902; semina 121,119. (No modela ratus, and has for its object the provision of an improved device of this character by means of which surgical dressings, bandages,

germs or bacilli destroyed.

Further objects and advantages of the invention will be set forth in the detailed description which now follows.

In the accompanying drawings, Figure 1 is a longitudinal vertical section of our improved sterilizing apparatus. Fig. 2 is a front elevation of the same. Fig. 3 is an elevation of the door of said apparatus; and Fig. 4 is a longitudinal vertical section of a portion of a sterilizing apparatus, showing a modified form of door which maybe em ployed.

Like numerals refer to similar parts throughout the several views.

Referring to the drawings, the numeral 5 designates a preferably drawn integral tubular metallic shell or easing, the rear end of which is closed, as at 6, and secured to the bottom of said shell by rivets or otherwise is a steam -generator 7, comprising a steamchamber 8, having a Well 9 for the reception of Water, this generator serving as a saddle to receive the casing 5. For applying heat to said steam-generator a gas or other burner 10 is inclosedwithin an ornamental ring 10', having air-admission ports 102, said burner being connected by4 a pipe 11, leading to a source of supply. Piping 12 connects the steam-chamber 8 of the generator with a Valve 14, communication being had through said valve with the interior of the shell or casing 5, said valve 14: also communicating with tubing 15, leading to a safety-Valve 16 and a pressure-recording gage 17.

Secured to the front end of shell or casing 5 is a flanged ring 18, having slots 18' 182 formed in the flange thereof to permit the door 19, provided with extensions 19 192, to

be inserted therethrough, as will be presently described. Threaded into the flanged ring 18 are screws 20, havingleVer-heads 20. to permit of their ready rotation and beveled ends 202, which serve a purpose hereinafter described. When it is desired to secure the door 19 after material has been placed in the shell 5, said door is held by the operator in such a way that the ears or extensions 19'192 thereof are in a vertical position, or in the p0- sition they Would assume if the door were to be giver. aquarter-turn in Fig. 3. The door is then tilted at an angle sufficient to permit f of its being passed'through the slots 18/ 182 to the interior of shell 5,When itis again brought to avertical position and given a quarter-turn to bring the ears or extensions 19 192 over said slots, as shown in Fig. l2, after which the retaining-screws 20 are rotated until their beveled ends 202 come into Contact with said door to force it tightly against the flanged lring 18, thereby to form a steam-tight joint, and to enable the operator to handle said door with greater facility a handle is formed thereon.

Fig. 4 illustrates, as before stated, a modi fied form of door, and when said door (indicated by the numeral 26) is used a ring 27 is substituted for the one shown in Figs. 1 and 2, said ring having retaining-screws 28, similar to the screws 20, hereinbefore described, threaded therein, and after the door 26 has been placed in position to close the entrance to shell 5 said screws are rotated until their beveled ends eome'into contact with a iiange 26 of the door to bind said door iirmly against the end of shell 5. `A gage-glass for indicatling thewater-level in the steam-generator is illustrated at 29,'a funnel 30 communicating With said gage-glass through a'cock 31.

Supports 2 of any desired -kind are secured to shell 5 to maintain the apparatus in an upright position.

This improved sterilizing apparatus is operated as follows: The cock 3l is opened and water is poured into the funnel 30 until a desired amount has entered the boiler, as indicated by the gage-glass 29, after which the cock 31 and valve 14 are closed and heat is `applied to the steam-generator by means of IOO pressure has been generated, valve 14 is opened to permit it to enter the casing 5, and thereby sterilize whatever articles may have been placed therein. The opening of valve I4 also permits the steam to pass through tubing 15 to the safety-valve and pressurerecording gage. After the articles have been thoroughly sterilized and it is desired to dry them the valve leiE is again closed, cutting off the supply of steam to chamber 5 and permitting said articles to be dried, and any Water of condensation which may have collected in said chamber is drawn offthrough a dripcock 35 in the bottom of said chamber, after which the screws 2() are retracted, the cover is Withdrawn, and the now sterilized articles are removed.

It will be observed that the cover 19 is not only held in place by the conical ends of the lever-screws, but is also forced snugly against its seat on the flange of ring IS by the pressure of the steam Within the shell, thereby affording double means for securingr it in a steam-tight position.

Our invention is not limited to the precise devices shoW-n and described, nor to any particular Way ot' applying` heat to the steamgenerator. Furthermore, the screws may be operated simultaneously, if desired, instead of individually, as shown.

Having described our invention, what We claim ish l. In a sterilizing apparatus, the combination, with a steriliZing-chamber having a flanged end, of means for applying heat to said chamber; a closure for said chamber; and devices passing through the flanged end of the chamber, and serving to force said closure against its seat.

2. In sterilizing apparatus, the combination, with a steriliZing-chamber, of a steamgenerator connected to said chamber; means for conducting steam from the steam-generator to said chamber; a door; and screws passing through a portion of the generator, and having points shaped to force said door against its seat.

3. In sterilizing apparatus, the combination, with a steriliZing-chamber, ot' means for supplying steam under pressure to the interior and exterior of said chamber; a flange upon one'end of said chamber; a door; and screws threaded into said ange and having conical points serving to bear against the door and secure the same in position.

4f. In sterilizing apparatus, the combination, with a sterilizing-chamber, of means for supplying steam to said chamber; a door; a

flanged ring; and bevel-ended screws passing through said ring, and serving to force said door against the flange thereof.

5. In sterilizing apparatus, the combination, With a sterilizing-chamber, of means for supplying steam to said chamber; a door; a ring, and retaining-screws threaded into said ring and having points bearing against the edge of the door.

6. In sterilizing apparatus, the combination, With a sterilizing-chamber, of means for supplying steam to said chamber; a flanged ring having slots formed therein; a door having ears or projections designed to cover said slots when the door is closed; and screws threaded into the flange for securing said door in position.

7. In sterilizing apparatus, the combination, with a sterilizing-chamber, of a steamgenerator secured to said chamber in such manner that the steam comes into direct contact with the exterior surface thereof; means for conducting said steam to the interior of said sterilizing-chamber; a door; and screws having Wedge shaped portions bearing against the edge of the door for securing said door in position.

S. In sterilizing apparatus, the combination, with a sterilizing-chamber, of a steamgenerator secured to said chamber in such manner that the steam comes into direct contact With the exterior thereof; means for conducting said steam to the interior of said`sterilizing-chamber; a door of construction to be closed by theV pressure of the steam; and screws passing through a part of the chamber and bearing against the inner side of the door.

9. A sterilizing apparatus comprising a sterilizing-chamber; asteam-chamberhaving a Well and a top concaved to fit the Wall of said steriliZing-chamber; means for applying heat to the Well of the steam-chamber; a pipe leading from the steam-chamber to the interior of the sterilizing-chamber; a valve in said pipe; a flanged and slotted ring on the end of the sterilizing-chamber; a closure having ears adapted to be inserted in the slots of the flange and to be then turned to cause said ears to bear against the flange; and means for forcing said closure against said flange.

In testimony whereof we aftlx our signatures in presence of two witnesses.

ROBERT R. PEASE. PHILIP J. TUCKER. Witnesses:

FRANK G. CAMPBELL, WM. I. LARAWAY.

TOO 

